Showing results 1 to 30 out of 30
Transient classification with NOT/ALFOSC
Source Group: CET-3PO
Related Objects:
2024wsg [ZTF24abjoura]
, RA, DEC:03:11:56.293, -02:58:01.22
(47.984554, -2.967006)
Redshift:0.028583
Type:SN II-pec
2024yrr [BGEM J020234.15+233824.7]
RA, DEC:02:02:34.153, +23:38:24.75
(30.642304, 23.640208)
Redshift:0.042413
Type:
Here we report the classification of two optical transients (an old SN II and an unidentified nuclear transient).
Spectroscopic classification of AT2024xdo as a YSO
Related Objects:
MISTRAL@T193OHP spectroscopic classification of AT2024xdo as a YSO
Asiago Spectroscopic classification of AT 2024tde as an M dwarf flare within the 2024 ASYAGO Summer School
Source Group: Padova-Asiago
Related Objects:
2024tde [PSP24U]
RA, DEC:00:15:39.630, +34:46:15.10
(3.915125, 34.770861)
Redshift:
Type:M dwarf
We report the spectroscopic classification of AT 2024tde as a flare from an M dwarf star.
ZTF Reclassification of SN 2024pco/ZTF24aaupoba as a Ib-pec SN
Related Objects:
2024pco [ZTF24aaupoba]
RA, DEC:01:57:55.700, +13:21:38.92
(29.482083, 13.360811)
Redshift:0.0443
Type:SN Ib-pec
Related Notes:
We re-classify SN 2024pco/ZTF24aaupoba as a Ib-pec SN based on a recently obtained spectroscopic information.
Shane Kast spectral classification of transients 2024-04-02
Source Group: ZTF
Related Objects:
2024ox [ZTF24aaartcf]
, RA, DEC:17:02:12.918, +56:11:47.92
(255.553826, 56.196645)
Redshift:0.0299
Type:SN Iax[02cx-like]
2024eui [ZTF18aawqjjj]
, RA, DEC:10:52:51.350, +37:25:36.80
(163.213958, 37.426889)
Redshift:0.0868
Type:SN Ia
2024faj [ZTF24aagxdol]
, RA, DEC:07:59:49.603, +08:26:54.85
(119.956677, 8.448569)
Redshift:0.0725
Type:SN Ia-91T-like
2024eao [ZTF24aagpxan]
, RA, DEC:06:09:46.380, +43:57:11.77
(92.443250, 43.953269)
Redshift:0.0277
Type:SN Ia
2024dwv [ZTF24aagpwsh]
, RA, DEC:06:42:19.679, +41:57:27.59
(100.581998, 41.957665)
Redshift:0.0431
Type:SN Ia
2024enp [ZTF24aahgcwg]
, RA, DEC:06:19:34.348, +55:11:48.02
(94.893118, 55.196671)
Redshift:0.0443
Type:SN Ia
2024dlo [ZTF24aagkvvm]
RA, DEC:16:02:12.817, +15:54:27.61
(240.553406, 15.907668)
Redshift:
Type:
Related Notes:
We report observations of 7 transients using the Shane Kast spectrograph at the Lick observatory on the night of 2024-04-02. Classifications were found for 6 objects, which includes 1 SN Iax (02cx-...
Asiago Spectroscopic classification of SN 2024cao and AT 2024ccb within the 2023 NEON Observing School
Source Group: Padova-Asiago
Related Objects:
2024ccb [ATLAS24chb]
, RA, DEC:00:42:57.190, +41:19:03.68
(10.738292, 41.317689)
Redshift:-0.001
Type:Nova
2024cao [ZTF24aaelfxz]
RA, DEC:23:51:34.981, +36:14:29.78
(357.895753, 36.241605)
Redshift:0.03
Type:SN Ia
We report the spectroscopic classification of SN 2024cao as a SN Ia and AT 2024ccb as a Fe II Nova in M31.
YSE Spectroscopic Classification of Transients with GMOS
Source Group: YSE
Related Objects:
2024fa [PS24ca]
RA, DEC:02:25:01.360, -24:47:12.88
(36.255667, -24.786911)
Redshift:0.01
Type:SN II
The Young Supernova Experiment (YSE) collaboration reports the classification of 1 optical transient using the Gemini GMOS-N: 1 type II supernova within days of explosion.
Early Spectrum of the FBOT Candidate 2023ufx from SCAT
Source Group: SCAT
Related Objects:
2023ufx [ATLAS23tsa]
RA, DEC:08:24:51.568, +21:17:43.15
(126.214866, 21.295320)
Redshift:0.01
Type:SN II
Related Notes:
We obtained a classification spectrum of the FBOT candidate AT2023ufx on 2023-10-09T14:17:46 showing a steep featureless blue continuum.
Host Extinction of SN2023ixf
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
Using data taken with the Keck Planet Finder spectrograph we calculate a host E(B-V) extinction of 0.031±0.006.
NUTS2 spectroscopy of supernova 2023ixf. The first week of evolution
Source Group: NUTS
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
Related Notes: , ,
We report low-resolution spectroscopic observations of SN 2023ixf obtained by NUTS2 covering the first week of evolution. Spectra will be made available on TNS/Wiserep.
DESI Spectrum of SN 2023ixf
Source Group: DESI
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
We present the spectrum of SN 2023ixf observed at 03:19:22.4 UTC on 23 May 2023 (MJD = 60087.138) using the Dark Energy Spectroscopic Instrument (DESI) at the 4m Mayall Telescope at Kitt Peak Natio...
ZTF, LT, and Keck/DEIMOS Observations of the Candidate Fast Blue Optical Transient (FBOT) AT2023hkw
Source Group: ZTF
Related Objects:
We report observations of the fast blue transient AT2023hkw (ZTF23aaimsja) ~3.3” from a cataloged galaxy in SDSS. In the g band, the transient brightened by 1.2 mag from the most recent upper limit...
Spectra of PESSTO data releases SSDR1-4 are publicly available on WISeREP
Source Group: PESSTO
The spectra released as part of the official PESSTO/ePESSTO data releases SSDR 1 to 4 are now up on WISeREP as a complete dataset, and the data - spectra and metadata lists - are also attached here...
ZTF, Gemini, and P200 Observations of the Candidate Luminous Fast Blue Optical Transient AT2023fhn
Source Group: ZTF
Related Objects: , ,
2018cow
, , RA, DEC:16:16:00.220, +22:16:04.91
(244.000917, 22.268031)
Redshift:0.014
Type:SN Ic-BL
We report observations of the fast, blue transient AT2023fhn (ZTF23aaeozpp/ATLAS23hnk), 5” from a catalogued galaxy in SDSS. The transient brightened over two days and faded by 1.4 magnitudes over ...
Follow-up observations of Type Icn SN 2023emq: transition to a Type Ibn SN
Related Objects:
2023emq
RA, DEC:13:34:22.033, -23:43:51.45
(203.591805, -23.730957)
Redshift:0.031
Type:SN Icn
Related Notes:
We report a spectral transition of SN 2023emq from a Type Icn SN into a Type Ibn SN
The Next Generation SuperFit (NGSF) tool is now available for online execution on WISeREP
NGSF, a software for the spectral classification of Supernovae based on Andy Howell's Superfit has been integrated into WISeREP (the Weizmann interactive Supernova data repository), and it is now p...
Asiago spectroscopic classification of an optical transient
Source Group: Padova-Asiago
Related Objects:
Related Notes:
We report the spectroscopic classification of AT2021tyc as an outburst of a Cataclysmic Variable.
Classification of AT 2021seu as a Possible Bowen Fluorescence Flare around a Supermassive Black Hole
Source Group: StarDestroyers
Related Objects:
We classify AT 2021seu as a possible Bowen Fluorescence Flare, related to enhanced accretion onto a supermassive black hole. Our FLOYDS spectrum, obtained on UT 2021-07-10, and made public on the T...
Spectroscopic Classification of AT2021qyd (ZTF21abhywxv) with Keck I + LRIS
Source Group: ZTF
Related Objects:
2021qyd [ZTF21abhywxv]
RA, DEC:16:55:04.485, +52:07:39.48
(253.768686, 52.127632)
Redshift:0.049
Type:SN Ib/c
Related Notes:
We report the spectroscopic classification of AT2021qyd as a peculiar Type Ib/c supernova.
Asiago spectroscopic classification of an optical transient
Source Group: Padova-Asiago
Related Objects:
We report the spectroscopic classification of AT2021pin as an outburst of a Cataclysmic Variable
Classification of AT 2021ont as a Possible Bowen Fluorescence Flare around a Supermassive Black Hole
Keywords: Spectroscopy
Related Objects:
2021ont [ZTF21abdmevk]
RA, DEC:16:26:42.476, +39:08:42.98
(246.676983, 39.145273)
Redshift:0.02833
Type:SN II
We classify AT 2021ont as a likely Bowen Fluorescence Flare, related to enhanced accretion onto a SMBH, based on an LT-SPRAT spectrum obtained on UT 2021-06-06 23:25:23. In this sense, AT 2021ont r...
ZTF21aayokph (AT2021lfa): Redshift from Gemini South
Related Objects:
We observed AT2021lfa with GMOS-S, and identify z=1.063 as the most probable redshift for this candidate afterglow.
Liverpool Telescope spectroscopy of AT2021gno and AT2021gmj
Source Group: ZTF
Related Objects:
2021gmj [ZTF21aaqgmjt]
, RA, DEC:00:00:00.000, +00:00:00.00
(0.000000, 0.000000)
Redshift:
Type:
2021gmj [ZTF21aaqgmjt]
2021gno [ZTF21aaqhhfu]
RA, DEC:00:00:00.000, +00:00:00.00
(0.000000, 0.000000)
Redshift:
Type:
2021gno [ZTF21aaqhhfu]
Related Notes:
Spectroscopy from the Liverpool Telescope shows AT2021gmj to be a young Type II supernova. The spectrum of AT2021gno is blue and featureless.
Classification of SN2020bvc (ASASSN-20bs) as a young broad-lined Ic supernova in UGC 9379
Source Group: ZTF
Related Objects:
2013cu
, RA, DEC:14:33:58.970, +40:14:20.69
(218.495710, 40.239080)
Redshift:0.025235
Type:SN IIb
2018gep
, , RA, DEC:16:43:48.201, +41:02:43.38
(250.950838, 41.045383)
Redshift:0.032
Type:SN Ic-BL
2020bvc
RA, DEC:14:33:57.009, +40:14:37.62
(218.487539, 40.243784)
Redshift:0.025235
Type:SN Ic-BL
We report Liverpool Telescope spectroscopy of SN 2020bvc, classifying it as a young Ic-BL supernova at d=110 Mpc. Early ZTF, LT, and ASAS-SN photometry shows it to have had an extremely fast initi...
ePESSTO+ spectroscopic classification of optical transients
Source Group: ePESSTO+
Related Objects:
2020ac [ATLAS20abm]
, RA, DEC:09:56:55.129, +15:42:09.04
(149.229704, 15.702510)
Redshift:0.074
Type:SN Ia-91T-like
2019yzs [ZTF19adcbnty]
RA, DEC:09:04:34.734, +14:35:44.87
(136.144725, 14.595798)
Redshift:0.0498
Type:
This report includes classifications of 1 Type Ia 91T-like SN, and an unknown nuclear transient.
Swift observations and spectroscopic classification of OGLE19qem as a Type IIn supernova
Related Objects:
2019qem [OGLE19qem]
RA, DEC:06:03:45.010, -64:22:35.94
(90.937542, -64.376650)
Redshift:0.042
Type:SN IIn
Here we present Swift observations and spectroscopic classification of OGLE19qem. The object was not detected in X-rays. UVOT colours suggests a temperature around 7000 K, while the spectral featur...
Classification of three type Ia SNe using the multispectral VPHG GRIS-U for DOLORES@TNG
Source Group: Padova-Asiago
Related Objects:
2019lyb [ASASSN-19sv]
, RA, DEC:15:11:03.356, +52:03:00.59
(227.763983, 52.050163)
Redshift:0.03692
Type:SN Ia
2019lwe [ATLAS19qee]
, RA, DEC:15:59:31.460, +43:25:46.63
(239.881083, 43.429619)
Redshift:0.038
Type:SN Ia
2019lvf [ZTF19abimlck]
RA, DEC:23:04:18.400, +46:32:10.03
(346.076667, 46.536119)
Redshift:0.048083
Type:SN Ia
We report the spectroscopic classifications of ASAS-SN19sv (SN2019lyb), ATLAS19qee (SN2019lwe) and ZTF19abimlck (SN2019lvf) as type Ia SNe.
Asiago spectroscopic classification of optical transients
Source Group: Padova-Asiago
Related Objects:
2019lrq [ASASSN-19se]
RA, DEC:16:18:01.310, +67:04:00.19
(244.505460, 67.066720)
Redshift:0.095
Type:AGN
We report the spectroscopic classifications of AT2019lrq as a type 1 AGN
Most Viewed
Discovery of Possible Transient in JWST NIRCam Images of SDSS J141930.11+525159.3
Early multiband light curve of SN 2023ixf
LT Classification of SN 2023ixf as a Type II Supernova in M101
Classification of SN 2020jfo (ZTF20aaynrrh) as a young Type II supernova
ATLAS20ktt (AT2020hvp): discovery of a candidate supernova in NGC 6118 (27 Mpc)
SN 2023tyk: discovery to spectroscopic classification performed fully automatically
Onset of SN 2023ixf observed over East Asian longitudes
ePESSTO+ re-classification of AT2019xis as a light echo of SN 1987A in the LMC.
ATLAS20qoq (AT2020nlb): discovery of a candidate SN in MESSIER 85 (17 Mpc)
Fast Radio Bursts (FRBs) now reported to and distributed via the TNS
Recent Released Tools
Keck Cosmic Web Imager host galaxy redshift of AT2024wpp
An Upcoming ZTF Experiment: Extended Deep-drilling Observations in the Galactic Plane